Vacuum bottle or receptacle.



J. E. MILLER.

VACUUM BOTTLE 0R RECEPTACLE.

APPLICATION FILED 00T.15,1909.

Patented Apr. 26, 1910.

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UNITED sTA'rEsI-@TENT OFFICE.

JOHN E. MILLER, 0F WASHINGTON, PENNSYLVANIAASSIGNOR TO DUNCAN @c MILLERGLASS COMPANY, 0F WASHINGTON, PENNSYLVANIA, A

SYLVAN IA.

CORPORATION or PENN- VACUUM BOTTLE OR RECEPTACLE.

Specification of Letters Patent.

Patented Apr?. 26, 1,910.-

Application led October 15,1909. Serial No. 522,728.

To all 'whom it may concern:

Be it known that I, JOHN E. MILLER, of Washington, Washington county,Pennsylvania, have invented a new and useful Improvement in VacuumBottles or Rece tacles, of which the following is a full, c ear, andexact description reference being had to the accompanying drawing,forming part of this speciicatiom'inwhich the figure is a centralvertical section of a vacuum bottle or receptacle embodying myinvention.

My invention has relation to vacuum bottles or'receptacles, and isdesigned to provide an article of this character which can bemanufactured and sold at a relatively low cost.

My invention more particularly. relates to means for sealing the vacuumchamber or space between the inner and outer receptac es.

Referring to the accompanying drawings, in which I have shownthereferredembodiment of my invention, t e numeral 2 designates, an outerreceptacle, which is preferabl of glass, and which is formed with a cosed bottom 3 and with an open upper end.

designates the inner vessel or receptacle, which is set within the Outerone, and which is of suiiciently less diameter to leave a surroundingvacuum space or chamber 5. The inner receptacle is formed with a"reduced neck portion 6, which projects above the upper end of the outerreceptacle, and is screwthreaded as indicated at 7 to receive a closingcap 8. This cap may be provided with .a l1ning 9 of cork or othersuitable material.

The inner receptacle is also provided at the base of its neck portion 6wlth a surrounding shoulder 10, which is adapted to seat a packing ringor gasket 11. This packing ring or gasket is secured in place by meansof a metallic ring 12 having a depending flange portion 13 which fitsaround the upper'portion of the outer receptacle. The inner edge of theuppe'r or horizontal portion of the ring seats against the shoulder 10.

The inner receptacle is placed within the Outer one, andis seated upona, iece 14 of paper, cardboard or other suitab e material,

- which is made of the proper thickness to bring the top shoulder 10into 4proper relation with the upper edge ofthe outer receptacle.' Theinner receptacle Ois also preferably provided with three or moreoutwardly extending centering projectionsl for hold- Ing the innerreceptacle in proper position.

After the air has been exhausted from the A space 5 between the tworeceptacles, the gasket 11 and ring 12 are forced to place wlthin thereceiver, in which theexhausting is done. The gasket, together with theinner although perhaps not as efficient as the more expensive bottlesnow in the market, are sufsurface of the ring is coated with vsilicateof ciently so for various purposes for which f such articles areemployed.

What I claim is 1. A vacuum bottle comprising an outer receptacle, aninner receptacle, a vacuum spaceor chamber between the tworeceptacles,the inner receptacle havmg a neck extension beyond the outer receptacle,and

`means for sealing the upper end of the vacuum space or chambercomprising a gasket seated on the upper edge of the outer receptacle anda shoulder of the inner receptacle,'and a metal ring seated over saidgasket substantially as described.

2. In a vacuum bottle, an outer receptacle formed with an open top, aninner receptacle having a reduced neck extension projecting, beyond theouter'receptacle, andl havinga shoulder at the base of such extension,a' gasket seated `on such shoulder and against the upper edge of theouter receptacle, and a metal ring seated over said gasket and having adepending flange embracing the upper ortion of the outer receptacle andmeans or centering the inner receptacle 'within the outer one,substantially as described.

' 3. In a vacuum bottle, an outer receptacle formed with an open top, aninner receptacle having a reduced neck extension projecting Y beyond theouter receptacle and havinga shoulder at the base of such extension, a

gasket seated on suoli shoulder and against. the upper edge of theouter'receptacle, and a metal ring seated overv sald gasket and having"a depending lia-nge embracing the upper Hortion of the outerreceptacle; substantia y as described.

4. In a vacuumbottle, an outer receptacle' formed with an open top, aninner receptacle having a reduced neck extension projecting beyond theouter receptacle, and having a shoulder at the base of suchA extension,a

' gasket seated on such shoulder .and against the up er edge of theouter receptacle, and a metalli ring seated over said gasket and havinga depending fiange embracing the upper portion of the outer receptacle,and the inner receptacle having a removable clo sure; substantially asdescribed.

5. In a vacuum bottle, an outer receptacle formed with an open ltop, aninner receptacle havin a reduced neck extension projecting beyon theouter receptacle, and having' az.

shoulder at the base of such extension, a gasketA seated on suchshoulder against the upper edge of the outer receptacle, and a metalring seated over said gasket and having a depending ange embracing theupper portion of the outer receptacle, said neck extension beingexteriorly threaded to receive a screw-cap or closure; substantially asdescribed.

In testimony whereof, I have hereunto set my hand.

JOHN E. MILLER. Witnesses:

JOHN R. EARLEY,

